Laurie Taylor explores the idea of the Tipping Point using a multidisciplinary project at Durham University as a springboard to examine what tipping points are, how they happen and what effect they have. Professor Tim Clark and Professor Pat Waugh from Durham University and Professor Alex Bentley from Bristol University are all involved in the Durham Tipping Points project and they are joined by Dr Shahidha Bari from Queen Mary, London to discuss the idea of the tipping point and what it might tell us about ourselves and our environment - and how, perhaps, we can use our understanding of it to prevent significant problems in areas as diverse as banking and sociology. Producer: Chris Wilson.